Yes, it will definitely cause night blindness in some oncoming drivers. If you had non-SAE / off-road pods, and aimed them downward away form oncoming eyes, you may be able to get by but for the light bar to be usable at that height, you’d lose the functionality almost completely.
Wide dispersion lights / lenses, there is not much you can do other than turn them off. As an example, the baja design squadron sport - not the pro - in wide corner will literally through light in all directions in front of the lens and it’s enough to hurt your eyes if you look directly at it. Oncoming drivers will not be your friends if getting a face full of off road lights.